![]() ![]() Also, it won't slow down in certain situations that affect the Fusion Drive's performance. The SSD is the fastest choice, obviously, if you are willing to cough up $1300. ( HIGHER number in Megabytes per Second is FASTER) Next we used the Custom Sequential test in QuickBench to measure transfer speed of a 1GB test size. ![]() Then it computes an average from 5 cycles of each. In the Standard test, it samples 4K, 8K, 16K, 32K, 64K, 128K, 256K, 512K, and 1024K random transfers. We used Intech Software's QuickBench 4 to measure the small random transfer speed of each drive. HDD 1TB = factory 1TB HDD (Seagate Barracuda 7200.14 ST1000DM003) HDD 3TB = factory 3TB HDD (Seagate Barracuda 7200.14 ST3000DM001) SSD 768G = factory 768GB SSD SM768E (Samsung)įusion 1TB = factory 1TB Fusion Drive (128G SSD SM128E + 1TB Seagate ST1000DM003) ![]() With the help of remote mad scientists, we were able to get test results on four of the five permutations available to 27-inch iMac buyers. We have answers to the question, "What drive should I order for my 'late 2012' iMac 27-inch?" Since the 27-inch uses 3.5-inch HDDs, the drive choices and drive performance will be different from the 21.5-inch iMac which uses 2.5-inch HDDs. ![]()
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